Hat nichts mit dem Hub zu tun, sondern mit der Federungsgeschwindigkeit des Dämpfers.
Hier die Anleitung von Fox.
http://www.ridefox.com/help.php?m=bike&id=556
Recommended Damper Settings
After setting shock air pressure by adjusting sag, use your air pressure in the table below to help find the suggested starting damper settings. As you ride and get used to your new shock, adjust your settings as needed.
Turn all damper settings to the closed position (full clockwise) until they stop. Then back them out (counter-clockwise) tot he number of clicks shown in the table below.
High-speed Rebound (HSR) adjustment is useful to allow the shock to recover from bigger hits and square-edged bumps quickly enough to absorb consecutive hits. Turning the 6mm Hex clockwise (in) slows down High-speed rebound, turning the 6mm Hex counter-clockwise (out) speeds up High-speed rebound.
Low-speed Rebound (LSR) adjustment is useful to control shock performance during brake bumps, technical climbing, and offcamber cornering, when extra traction is needed. Turning the 3mm Hex clockwise (in) slows down Low-speed rebound, turning the 3mm Hex counter-clockwise (out) speeds up Low-speed rebound.
Adjust rebound until when tested, the shock returns quickly but does not top out.
Top out is felt when a shock fully extends too quickly and comes to an abrupt stop when it reaches full extension (you will hear/feel a small noise). Top out should be avoided through proper rebound setting.
High-speed Compression (HSC) adjustment is useful to control shock performance during bigger hits, landings, and squareedged bumps. Turning the 6mm Hex clockwise (in) adds High-speed compression damping (firmer), turning the 6mm Hex counter-clockwise (out) reduces High-speed compression damping (softer).
Low-speed Compression (LSC) adjustment is useful to control shock performance during rider weight shifts, G-outs, and other slow inputs. Turning the 3mm Hex clockwise (in) adds Low-speed compression damping (firmer), turning the 3mm Hex counter-clockwise (out) reduces Low-speed compression damping (softer).